Process for hydrothermal synthesizing bismuth citrate
A technology of bismuth citrate and hydrothermal synthesis, applied in the preparation of carboxylate, organic chemistry and other directions, can solve the problems of low atomic economy, increased product toxicity, unfriendly environment, etc., and achieve green production process, increase One-time utilization, environment-friendly effect
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Embodiment 1
[0017] Step 1: Grind 1 mmol of bismuth oxide and 2.1 mmol of citric acid in a mortar until they are evenly mixed, put them into an autoclave, and add 4 mmol of water. The autoclave was sealed well, placed in a constant temperature drying oven, and reacted at a constant temperature for 6 hours at a set temperature of 140°C.
[0018] Step 2: Take out the autoclave, open it after it cools down naturally, take out the suspension in the autoclave and filter it with suction, wash the filter cake with distilled water until the pH of the filtrate is 5-7, and there is no citric acid.
[0019] The third step is to put the obtained solid into a vacuum drying oven at 60° C. for vacuum drying to obtain pure bismuth citrate. Calculated by adding bismuth oxide, the yield of bismuth citrate can reach 99%.
Embodiment 2
[0021] Step 1: Grind 1 mmol of bismuth oxide and 2.1 mmol of citric acid in a mortar until they are evenly mixed, put them into an autoclave, and add 4 mmol of water. The autoclave was sealed well, placed in a constant temperature drying oven, and reacted at a constant temperature for 9 hours at a set temperature of 130°C.
[0022] Step 2: Take out the autoclave, open it after it cools down naturally, take out the suspension in the autoclave and filter it with suction, wash the filter cake with distilled water until the pH of the filtrate is 5-7, and there is no citric acid.
[0023] The third step is to put the obtained solid into a vacuum drying oven at 60° C. for vacuum drying to obtain pure bismuth citrate. Calculated by adding bismuth oxide, the yield of bismuth citrate can reach 99%.
Embodiment 3
[0025] Step 1: Grind 2mmol of bismuth oxide and 4.2mmol of citric acid in a mortar until they are evenly mixed, put them into an autoclave, and add 8mmol of water. The autoclave was sealed well, placed in a constant temperature drying oven, and reacted at a constant temperature for 12 hours at a set temperature of 120°C.
[0026] Step 2: Take out the autoclave, open it after it cools down naturally, take out the suspension in the autoclave and filter it with suction, wash the filter cake with distilled water until the pH of the filtrate is 5-7, and there is no citric acid.
[0027] The third step is to put the obtained solid into a vacuum drying oven at 60° C. for vacuum drying to obtain pure bismuth citrate. Calculated by adding bismuth oxide, the yield of bismuth citrate can reach 99%.
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